74AHC1G4208-Q100 8-stage divider and oscillator Rev. 1 3 September 2019 Product data sheet 1. General description 74AHC1G4208-Q100 is a 8-stage divider and oscillator. It consists of a chain of 8 flip-flops. Each flip-flop divides the frequency of the previous flip-flop by two, consequently the 8 74AHC1G4208-Q100 counts up to 2 = 256. The single inverting stage (X1 to X2) functions as a crystal oscillator or an input buffer for an external oscillator. When used as a buffer the output X2 should be left floating. The frequency of the output (Q) is the frequency applied to X1 divided by 256. The divider advances on the negative-going transition of X1. The X1 input is overvoltage tolerant. This feature allows the use of this device as a voltage level translator in mixed voltage environments. 2. Features and benefits Automotive product qualification in accordance with AEC-Q100 (Grade 1) Specified from -40 C to +85 C and from -40 C to +125 C Wide supply voltage range from 2.0 V to 5.5 V Overvoltage tolerant inputs to 5.5 V High noise immunity CMOS low power dissipation ESD protection: HBM: ANSI/ESDA/Jedec JS-001 exceeds 2000 V CDM: ANSI/ESDA/Jedec JS-002 exceeds 1000 V MIL-STD-883, method 3015 exceeds 2000 V Latch-up performance exceeds 100 mA per JESD 78 Class II 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74AHC1G4208GW-Q100 -40 C to +125 C TSSOP5 plastic thin shrink small outline package SOT353-1 5 leads body width 1.25 mm 4. Marking Table 2. Marking codes Type number Marking 1 74AHC1G4208GW-Q100 C5 1 The pin 1 indicator is located on the lower left corner of the device, below the marking code.Nexperia 74AHC1G4208-Q100 8-stage divider and oscillator 5. Functional diagram X1 Q 1 4 8-STAGE X2 COUNTER 2 aaa-029845 Fig. 1. Logic symbol X2 FF1 FF2 FF8 D D D X1 CP CP CP Q1 Q2 Q8 Q aaa-029846 Fig. 2. Logic diagram 6. Pinning information 6.1. Pinning 74AHC1G4208 1 5 X1 V CC 2 X2 GND 3 4 Q aaa-029847 Fig. 3. Pin configuration SOT353-1 6.2. Pin description Table 3. Pin description Symbol Pin Description X1 1 clock input/oscillator pin X2 2 oscillator pin GND 3 ground (0 V) Q 4 divider output V 5 supply voltage CC 74AHC1G4208 Q100 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2019. All rights reserved Product data sheet Rev. 1 3 September 2019 2 / 11